The development of energy storage devices with high energy density relies heavily on thick film electrodes,but it is challenging due to the limited ion transport kinetics inherent in thick ***,we report on the prepara...
详细信息
The development of energy storage devices with high energy density relies heavily on thick film electrodes,but it is challenging due to the limited ion transport kinetics inherent in thick ***,we report on the preparation of a directional vertical array of micro-porous transport networks on LTO electrodes using a femtosecond laser processing strategy,enabling directional ion rapid transport and achieving good electrochemical performance in thick film *** three-dimensional(3D)vertically aligned micro-pore networks are innovatively designed,and the structure,kinetics characteristics,and electrochemical performance of the prepared ion transport channels are analyzed and discussed by multiple characterization and testing ***,the rational mechanisms of electrode performance improvement are studied experimentally and simulated from two aspects of structural mechanics and transmission *** ion diffusion coefficient,rate performance at 60 C,and electrode interface area of the laser-optimized 60-15%micro-porous transport network electrodes increase by 25.2 times,2.2 times,and 2.15 times,respectively than those of untreated ***,the preparation of 3D micro-porous transport networks by femtosecond laser on ultra-thick electrodes is a feasible way to develop high-energy *** addition,the unique micro-porous transport network structure can be widely extended to design and explore other high-performance energy materials.
The honey badger algorithm(HBA),as a new swarm intelligence(SI)optimization algorithm,has shown certain effectiveness in its *** at the problems of unsatisfactory initial population distribution of HBA,poor ability to...
详细信息
The honey badger algorithm(HBA),as a new swarm intelligence(SI)optimization algorithm,has shown certain effectiveness in its *** at the problems of unsatisfactory initial population distribution of HBA,poor ability to avoid local optimum,and slow convergence speed,this paper proposes a multi-strategy improved HBA based on periodical mutation and t-distribution perturbation,called ***,a good point set population initialization is introduced to get a uniform initial ***,periodic mutation and t-distribution perturbation are successively used to improve the algorithm’s ability to avoid local ***,the density factor is improved for balancing exploration and *** comparing MHBA with HBA and 7 other SIs on 6 benchmark functions,it is evident that the performance of MHBA is far superior to *** addition,by applying MHBA to robot path planning,MHBA can identify the shortest path more quickly and consistently compared with competitors.
Although guided image filtering(GIF) is known for preserving edges and fast computation,it may produce inaccurate outputs in depth map *** this paper,a novel confidence-weighted GIF called mutual-structure weighted GI...
详细信息
Although guided image filtering(GIF) is known for preserving edges and fast computation,it may produce inaccurate outputs in depth map *** this paper,a novel confidence-weighted GIF called mutual-structure weighted GIF(MSWGIF) is proposed,which replaces the mean filtering strategy in GIF during handling overlapping *** confidence value is composed of a depth term and a mutual-structure term,where the depth term is utilized to protect the edges of the output,and the mutual-structure term helps to select accurate windows during the structure characteristics of the guidance image are transferred to the *** results show that MSWGIF reduces the root mean square error(RMSE) by an average of 12.37%,and the average growth rate of correlation(CORR) is 0.07% on ***,the average growth rate of structure similarity index measure(SSIM) is 0.34%.
Exoskeletons generally require accurate dynamic models to design the model-based controller conveniently under the human-robot interaction ***,due to unknown model parameters such as the mass,moment of inertia and mec...
详细信息
Exoskeletons generally require accurate dynamic models to design the model-based controller conveniently under the human-robot interaction ***,due to unknown model parameters such as the mass,moment of inertia and mechanical size,the dynamic model of exoskeletons is difficult to ***,an enhanced whale optimization algorithm(EWOA)is proposed to identify the exoskeleton model ***,the periodic excitation trajectories are designed by finite Fourier series to input the desired position demand of exoskeletons with mechanical physical *** a backstepping controller based on the identified model is adopted to improve the human-robot wearable comfortable performance under cooperative ***,the proposed Model parameters identification and control are verified by a two-DOF exoskeletons *** knee joint motion achieves a steady-state response after 0.5 ***,the position error of hip joint response is less than 0.03 rad after 0.9 *** addition,the steady-state human-robot interaction torque of the two joints is constrained within 15 N·*** research proposes a whale optimization algorithm to optimize the excitation trajectory and identify model ***,an enhanced mutation strategy is adopted to avoid whale evolution’s unsatisfactory local optimal value.
Sufficient treatment of industrial organic wastewater with high salt and large amounts of suspended particulate matter remains a challenge *** this work,a novel coagulation-flotation combined process was developed to ...
详细信息
Sufficient treatment of industrial organic wastewater with high salt and large amounts of suspended particulate matter remains a challenge *** this work,a novel coagulation-flotation combined process was developed to treat the suspended particles as well as significantly reduce organic pollutants content in the actual high-salt organic *** typical inorganic and organic flocculants(poly aluminum chloride(PAC),poly ferric sulfate(PFS),polyacrylamide(PAM),and modified cationic starch(CS))were selected for compounding to obtain an optimized flocculation system for high-salt *** results showed that the PAC-PAM with a 10:1 ratio in mass exhibited the best coagulation behaviors with the removal efficiency of turbidity and chemical oxygen demand(COD)being 95.33%and 9.21%,respectively,under the optimal operation conditions,and the sedimentation process of coagulant conformed to the quasi-second-order *** PAC-PAM flocs exhibited stronger netting,sweeping,and adsorption bridging capabilities,which were conducive to removing suspended *** the flotation was conducted after coagulation,the COD decreased significantly by 20.82%.In addition,this combined process could reduce the treatment time by 50%compared to the process with only coagulation *** the flotation process,floc particles companies with hydrophobic polycyclic aromatic hydrocarbons could collide and adhere to microbubbles and be floated to the surface,resulting in an effective reduction of *** work could provide a novel strategy and step forward to design and optimize the pretreatment process engineering for organic high-salt wastewater.
The design of universal segments and deviation control of segment assembly are essential for robust and low-risk tunnel construction.A building information modeling(BIM)-based framework was proposed for parametric mod...
详细信息
The design of universal segments and deviation control of segment assembly are essential for robust and low-risk tunnel construction.A building information modeling(BIM)-based framework was proposed for parametric modeling,automatic assembly,and deviation control of universal ***,segment models of different levels of detail(LoDs)were built based on BIM visual programming language(VPL)for different project life ***,the geometric constraints,requirements,and procedures for parametric segment assembly were distilled to develop a program that combines a novel typesetting algorithm with a 3D path replanning *** is implemented by introducing a point indication matrix,characterizing segments by sides,and manipulating geometries in a ***,3D path replanning,with non-uniform rational B-splines(NURBS)and arcs as basic shapes,was used to resolve unacceptable deviation situations after ***,the proposed framework was validated on a water diversion line and was found to be more effective and accurate than the previous method.
In this study, an approach involving gas chromatography-mass spectrometry (GC-MSMS) combined with a modified QuEChERS method was developed for the detection of 13 novel fungicides in chicken and beef samples, in accor...
详细信息
In this study, an approach involving gas chromatography-mass spectrometry (GC-MSMS) combined with a modified QuEChERS method was developed for the detection of 13 novel fungicides in chicken and beef samples, in accordance with the regulatory limits proposed by Japan, South Korea, Codex Alimentarius, and the EU in recent years. The regulatory limits and detection methods for these fungicides in foods of animal origin are yet to be established in china. These 13 fungicides were linearly correlated in a range of 0.1-200 ng mL(-1) with a coefficient of determination (R-2) of >0.999. The limits of detection (LODs) and limits of quantification (LOQs) for the 13 fungicides were found to be in a range of 0.16-1.50 ng mL(-1) and 0.54-5.00 ng mL(-1), respectively. The recovery of the spiked samples exhibited a range of 79.51-111.39% (RSD <= 10.51%), demonstrating satisfactory accuracy and precision. This study establishes a foundation for the identification of novel fungicides in foods of animal origin and provides technical references for the investigation of novel fungicides.
To reveal the effects of environmental and loading conditions, as well as asphalt properties on the nonlinear rheological behavior of asphalt, the large amplitude oscillation shear(LAOS) test was introduced, and the F...
详细信息
To reveal the effects of environmental and loading conditions, as well as asphalt properties on the nonlinear rheological behavior of asphalt, the large amplitude oscillation shear(LAOS) test was introduced, and the Fourier transform rheology, Lissajous curve method, and the LAOS fatigue test have been applied to investigate the nonlinear rheological behavior of asphalt binders. The research results indicate that a decrease in temperature, an increase in shear frequency and strain level, the introduction of polymer modifiers, and the aging effect of asphalt can significantly increase the nonlinearity of asphalt, manifested by the higher relative magnitude of the third harmonic and zero-strain nonlinear coefficient. For the two polymer modifiers selected in this study, the 4%polyurethane modifier exhibits a higher nonlinear lifting effect than the 4% styrene-butadiene-styrene(SBS). The impact of long-term aging on nonlinear viscoelasticity is observably greater than that of short-term aging. The zero-strain nonlinear coefficient estimated based on the average value method can accurately characterize the nonlinear viscoelasticity of asphalt, which can serve as an effective supplement to the relative magnitude of the third harmonic. All asphalts exhibit shear thinning behavior under the test temperature of 24℃, and the decrease in test temperature, the increase in shear rate and strain level, the introduction of modifiers, and the aging effect of asphalt all exacerbate the shear thinning behavior of asphalt. In addition, the fatigue failure process of asphalt materials is accompanied by an increasing degree of nonlinearity.
Dear Editor,This letter focuses on the integration of inventory monitoring and capacity changes in dynamic supply chains(SCs)with the bullwhip effect(BE)and the ripple effect(RE).First,a new inventory monitoring model...
详细信息
Dear Editor,This letter focuses on the integration of inventory monitoring and capacity changes in dynamic supply chains(SCs)with the bullwhip effect(BE)and the ripple effect(RE).First,a new inventory monitoring model with stochastic switched topologies is proposed for SCs,potentially showing merits in incorporating the BE and the RE,and allowing control-theoretic approaches to identify their ***,sufficient conditions on the existence of inventory controllers are derived such that the monitoring system is stabilizable with mitigation of the BE in the presence of the RE.
Introduction:Laiza and nearby areas(LNA)in Myanmar are identified as the primary malaria hotspots in the bordering regions of Yunnan Province,***:Six sentinel surveillance sites were established at the china-Myanmar b...
详细信息
Introduction:Laiza and nearby areas(LNA)in Myanmar are identified as the primary malaria hotspots in the bordering regions of Yunnan Province,***:Six sentinel surveillance sites were established at the china-Myanmar border in LNA to monitor *** from 2019 was used as a baseline to analyze malaria incidence and trends in LNA and Myanmar,as well as the importation of malaria cases into china from 2019 to ***:Plasmodium vivax was the predominant species,representing 99.95%(14,060/14,066)of confirmed malaria cases in LNA.A total of 8,356 malaria cases were identified in 2023,with an annual parasite incidence(API)of 19.78 per 100 *** to 2019,the incidence rate ratio was 21.47(95%confidence interval:18.84,24.48),indicating that the API in 2023 was 21.47 times higher than that in *** Yunnan,out of 1,016 reported cases,545 imported cases(53.64%)originated from LNA and spread to 18(13.95%)out of 129 *** provinces in china,including Yunnan,reported imported malaria cases from LNA in ***:The increase in population,particularly among internally displaced persons,along with inadequate healthcare services,has led to a notable resurgence of malaria in *** resurgence poses a risk to preventing the re-emergence of malaria transmission in *** is an urgent need for novel collaborative policies,as well as financial and technical assistance,to enhance malaria control efforts in LNA,Myanmar.
暂无评论